CN104204667A - Operating method for pressurized fluidized furnace system - Google Patents
Operating method for pressurized fluidized furnace system Download PDFInfo
- Publication number
- CN104204667A CN104204667A CN201380013571.2A CN201380013571A CN104204667A CN 104204667 A CN104204667 A CN 104204667A CN 201380013571 A CN201380013571 A CN 201380013571A CN 104204667 A CN104204667 A CN 104204667A
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- China
- Prior art keywords
- air
- treated
- air blast
- fluidized furnace
- employ
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011017 operating method Methods 0.000 title 1
- 238000002485 combustion reaction Methods 0.000 claims abstract description 108
- 239000007789 gas Substances 0.000 claims description 68
- 238000002309 gasification Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- 238000005243 fluidization Methods 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract 3
- 230000004913 activation Effects 0.000 abstract 2
- 231100000614 poison Toxicity 0.000 abstract 1
- 239000003440 toxic substance Substances 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 26
- 239000000446 fuel Substances 0.000 description 17
- 238000007599 discharging Methods 0.000 description 16
- 239000000428 dust Substances 0.000 description 13
- 239000000779 smoke Substances 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 11
- 229910002091 carbon monoxide Inorganic materials 0.000 description 11
- 230000000630 rising effect Effects 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 239000004576 sand Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010801 sewage sludge Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 description 2
- 102000005393 Sodium-Potassium-Exchanging ATPase Human genes 0.000 description 1
- 108010006431 Sodium-Potassium-Exchanging ATPase Proteins 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/16—Fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures, e.g. by the arrangement of the combustion chamber and its auxiliary systems inside a pressure vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/30—Oxidant supply
Abstract
[Problem] To prevent the generation of toxic substances caused by the incomplete combustion of a processing subject material remaining in a pressurized fluidized furnace. [Solution] An activation blower (65) is restarted in synchronization with the stopping of a supply device (11) that supplies a processing subject material to a pressurized fluidized furnace (20) that burns the processing subject material, and air is supplied from the activation blower (64) to a compressor (62) of a supercharger (60).
Description
Technical field
The present invention relates to the method for shutting down of the pressurized stream gasification furnace system that makes the object being treated burnings such as sewage sludge, living beings, municipal refuse, in more detail, relate to the method for shutting down that makes to remain in the object being treated completing combustion in pressurization fluidized furnace and suppress the pressurized stream gasification furnace system of the generation of harmful substance.
Background technology
In the past, a kind of waste combustion stove has been proposed, this waste combustion stove is in order to reduce the harmful substance such as carbon monoxide, dioxin (dioxin) producing owing to remaining in the imperfect combustion of the object being treated in combustion chamber, have combustion air pipe, this combustion air pipe is formed with blow-off outlet (with reference to patent documentation 1) from the inner body to combustion chamber that supply with equably the continuous seam shape of the leading section of combustion air with.
And, as the burning facility that is conceived to make the object being treated burnings such as sewage sludge, living beings, municipal refuse and effectively takes out the energy having from the burnt gas of incinerator discharge, be known to pressurized stream gasification furnace system.Pressurized stream gasification furnace system is to be characterised in that the system with pressurization fluidized furnace and booster, pressurization fluidized furnace makes object being treated burning, booster is built-in with turbine and compressor, the burnt gas that this turbine utilization goes out from pressurization fluidisation fire grate and rotating, this compressor and turbine are fixing coaxially, follow the rotation of turbine and rotate, supplying with compressed air.In pressurized stream gasification furnace system, can carry out following independent operation,, utilize the burnt gas producing in the time making object being treated completing combustion to drive the turbine of booster, utilize the compressed air of discharging from compressor that burning and the needed whole combustion airs of fluid bed fluidisation of object being treated are provided.Be well known that, owing to can carrying out independent operation, thereby do not need needed fluidizing air blower and air-introduced machine in the past, operating cost reduces (with reference to patent documentation 2).
Prior art document
Patent documentation
[patent documentation 1] Japanese kokai publication hei 7-208716 communique
[patent documentation 2] TOHKEMY 2005-28251 communique
Summary of the invention
The problem that invention will solve
But, the feedway to combustion air pipe supply combustion air that patent documentation 1,2 is recorded is normally used single based devices, in the situation that this feedway generation work is bad, owing to there is no mechanism for subsequent use, thereby supply with and interrupt to the combustion air of combustion chamber, remain in the object being treated imperfect combustion in combustion chamber, the harmful substance such as carbon monoxide, dioxin causing due to imperfect combustion is likely discharged to outside equipment.
And, in booster-type fluidizing equipment, because being utilizes the burnt gas of object being treated to supply with combustion air, thereby in the case of the feed unit generation work of object being treated is bad, or while decline at equipment, the feedway of object being treated stops, burnt gas amount sharply declines, the driving force of turbine reduces, thereby the carrying capacity of the combustion air that should be supplied with by compressor sharply reduces, thereby reduce to the combustion air of supplying with in stove, remain in the object being treated imperfect combustion in pressurization fluidized furnace, carbon monoxide, the harmful substances such as dioxin are likely discharged to outside equipment.
Therefore, major subjects of the present invention is to address the above problem.
For solving the means of problem
The present invention and the action effect that solve above-mentioned problem are as follows.
That is, the 1st invention is a kind of method of operation of pressurized stream gasification furnace system, and described pressurized stream gasification furnace system has: the feedway of object being treated, and it supplies with object being treated to the pressurization fluidized furnace that makes object being treated burning; Booster, it is built-in with the turbine that utilizes the burnt gas that goes out from this pressurization fluidisation fire grate and rotate and follows the rotation of turbine and rotate and supply with to described pressurization fluidized furnace the compressor of combustion air; Rise and employ air blast, its in the time of starting via bypass flow path to described pressurization fluidized furnace air supply and stop after booster air supply via air flow circuit; And measure the first densimeter of the unburned gas concentration the burnt gas that goes out from described pressurization fluidisation fire grate and measure the second densimeter of oxygen concentration, it is characterized in that,
In described method of operation, stop again starting as condition has made to employ air blast taking the feedway of described object being treated, from described, employ the compressor air supply of air blast to described booster.
(action effect)
Stop again starting as condition has made to employ air blast taking feedway from object being treated to the pressurization fluidized furnace that makes object being treated burning that supply with, from employ air blast to the compressor air supply of booster of pressurization fluidized furnace being supplied with to combustion air, thereby can be irrelevant with the generation of the burnt gas of pressurization fluidized furnace, supply remains in the needed combustion air of burning of the object being treated in pressurization fluidized furnace, residual object being treated completing combustion can be made, the generation of the harmful substance causing due to the imperfect combustion of object being treated can be suppressed.
The 2nd invention is on the basis of the structure of the 1st invention, it is characterized in that, in the case of meet the combustion air of supplying with to pressurization fluidized furnace from described compressor be less than rated capacity 50%, described unburned gas concentration is more than the setting value of regulation and from described, employs at least one party the situation more than pressure that compressed-air actuated pressure that air blast discharges is the combustion air of discharging from described compressor, open described bypass flow path, from described, employ air blast to described pressurization fluidized furnace air supply via described bypass flow path.
(action effect)
In the case of meet the combustion air of supplying with to pressurization fluidized furnace from compressor be less than rated capacity 50%, unburned gas concentration is more than the setting value of regulation and from described, employs at least one party the situation that the pressure of the combustion air that compressed-air actuated pressure ratio that air blast discharges discharges from described compressor is high, not via the compressor of booster from employ air blast to pressurization fluidized furnace direct air supply, thereby do not waste useless air-supply power and can make to remain in object being treated completing combustion in pressurization fluidized furnace to last.
The 3rd invention, on the basis of structure of the 1st or the 2nd invention, is characterized in that, after the setting value of fixed value or regulation declines, stops the described driving of employing air blast that rises in the measured value of described the first densimeter.
(action effect)
, after the setting value of fixed value or regulation declines, stop with the driving of air blast, thereby can prevent that harmful substance is discharged to outside the system of pressurized stream gasification furnace system in the measured value of the first densimeter.
The 4th invention, on the basis of structure of the 3rd invention, is characterized in that, the measured value of described the second densimeter become with the roughly the same value of airborne oxygen concentration after, stop the described driving of employing air blast that rises.
(action effect)
The measured value of the second densimeter become with the roughly the same value of airborne oxygen concentration after, the driving stopping with air blast, thereby the discharge that can further improve the harmful substance of pressurized stream gasification furnace system prevents performance.
The 5th invents on the basis of the 1st or the 3rd structure of inventing, and it is characterized in that, described the first densimeter is carbonomonoxide concentration meter or dioxin densimeter.
(action effect)
Can measure reliably due to the carbon monoxide that the imperfect combustion of object being treated produces, the concentration of dioxin.
Invention effect
According to above invention, even in the case of the supply of object being treated stops, also can be to pressurization the object being treated in fluidized furnace process and can not make its imperfect combustion.
Brief description of the drawings
Fig. 1 is the key diagram of pressurized stream gasification furnace system.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is the partial enlarged drawing of Fig. 1.
Fig. 5 is the key diagram of control device.
Fig. 6 is the flow chart of the auxiliary-supplying apparatus of combustion air.
Fig. 7 is the flow chart of method of operation.
Fig. 8 is the flow chart of another method of operation.
Detailed description of the invention
Below, with reference to the accompanying drawings of present embodiment of the present invention.In addition, for easy understanding, suitably illustrate that direction describes, but structure is not limited by this.
As shown in Figure 1, pressurized stream gasification furnace system 1 has: storage facility 10, the object being treateds such as its storage mud; Pressurization fluidized furnace 20, it makes the object being treated burning of supplying with from storage facility 10; Air preheater 40, it utilizes the burnt gas of discharging from pressurization fluidized furnace 20 to heat the combustion air that is supplied to pressurization fluidized furnace 20; Dust arrester 50, the dust in its removal burnt gas etc.; Booster 60, it is driven by burnt gas, and combustion air is supplied to pressurization fluidized furnace 20; White cigarette prevents from using preheater 70, and it utilizes the burnt gas of discharging from booster 60 to prevent from heating with air to the white cigarette that is supplied to smoke evacuation treating column 80; And smoke evacuation treating column 80, it removes the impurity in burnt gas.
(storage facility)
The object being treated being stored in storage facility 10 is mainly that dehydrated processing to moisture content is the sewage sludge of 70～85 quality %, and object being treated includes combustible organic matter.In addition, object being treated, as long as water-bearing organic, is not limited to sewage sludge, can be also living beings, municipal refuse etc.
Dispose the quantitative feeding device 11 that the object being treated of ormal weight is supplied to pressurization fluidized furnace 20 in the bottom of storage facility 10, be provided with the delivery pump 12 that object being treated is sent to pressurization fluidized furnace 20 in the downstream of quantitative feeding device 11.In addition, as delivering pump 12, can use single-shaft-screw pump, piston pump etc.Feedway in the present invention can be quantitative feeding device 11 and deliver any one party in pump 12, also can make quantitative feeding device 11 and deliver pump 12 to become one.
(pressurization fluidized furnace)
Pressurization fluidized furnace 20 is under-filled husky combustion furnaces that wait solids of the fluidisation with regulation particle diameter that have as fluidizing agent in stove, in combustion air in utilization is supplied to stove maintains the fluidized state of fluosolids (hereinafter referred to as sand bed), make the object being treated of supplying with from outside and the auxiliary fuel burning of supplying with as required.
As shown in Figure 1 and Figure 2, dispose in the lower sidewall of a side auxiliary fuel burner 21 that the fluidisation sand of particle diameter approximately 400～600 μ m to being filled into pressurization fluidized furnace 20 inside heats, dispose rising of in the time of starting, fluidisation sand being heated near the position upside of auxiliary fuel burner 21 and employ burner 22, be provided with the supply port 13B of object being treated at the position of working the upside of employing burner 22.
And, dispose for burnt gas being carried out to cooling hydraulic giant (water gun) 23 on the top of pressurization fluidized furnace 20, can as required cooling water be sprayed in stove with Sprayable.
Auxiliary fuel burner 21 is at the upside of dispersion pipe (combustion air supply pipe) 24, similarly dispose side by side multiple auxiliary fuel burners 21 with combustion air supply pipe 24, to the fluidisation sand being filled in pressurization fluidized furnace 20 is heated.Auxiliary fuel burner 21 is supplied with the auxiliary fuel such as gas, heavy oil from the auxiliary fuel supply system 29 being arranged on stove.In addition, as auxiliary fuel burner 21, also can use gas gun or oil gun.
Rise and employ burner (burner) 22 and be configured to decline to the central part of pressurization fluidized furnace 20, to heat above to fluidisation sand in when starting.In addition, with auxiliary fuel burner 21 similarly, from the auxiliary fuel supply system 29 stove to employ burner 22 and supply with auxiliary fuel.And, work the combustion air of employing burner 22 and employ the wind pushing air that air blast 65 produces and supply with by rising via pipe arrangement 96.
The lower sidewall of opposite side at pressurization fluidized furnace 20 disposes combustion air supply pipe 24, and this combustion air supply pipe 24 carries out the combustion air for the oxygen supply of fluid bed fluidisation and burning to the internal feed of pressurization fluidized furnace 20.The sidewall in thin footpath on pressurization fluidized furnace 20 tops is formed with outlet 90A, and this outlet 90A is heated the water existing in the burning gases that produce due to the burning of auxiliary fuel, object being treated etc., husky filtered water, object being treated etc. the steam that produces etc. and is discharged to outside stove.In addition, in the present invention, the gas that burning gases or burning gases and steam are mixed to get is called burnt gas.
Combustion air supply pipe 24 is configured in the downside of auxiliary fuel burner 21, to supply with equably combustion air to the auxiliary fuel of supplying with from auxiliary fuel burner 21.
At the sidewall of pressurization fluidized furnace 20, be provided with the multiple temperature sensors (omitting diagram) for measuring temperature in stove along short transverse with predetermined distance.It is sand bed and free space (free board) portion that position is set, and is respectively a position, 2 position～3, amounts to a position, 4 position～6.As temperature sensor, can use thermocouple etc.Here, free space portion refers to the upper layer part of sand bed in the inside of pressurization fluidisation grate firing burning stove 11.The signal of telecommunication of temperature in the stove of each setting position of expression is outputed to control device 100 by these temperature sensors.
(air preheater)
Air preheater 40 is arranged on the rear class of pressurization fluidized furnace 20, by indirectly burnt gas and the combustion air of discharging from pressurization fluidized furnace 20 being carried out to heat exchange, makes combustion air be warmed up to the equipment of set point of temperature.
As shown in Figure 1, Figure 3, air preheater 40 is formed with the supply port 90B from the burnt gas of pressurization fluidized furnace 20 in the side wall upper part of a side, and near the position downside of supply port 90B is formed with the outlet 91A that discharges combustion air from air preheater 40.And the supply port 90B of burnt gas is connected with the outlet 90A of pressurization fluidized furnace 20 via pipe arrangement 90, the outlet 91A of combustion air is connected with the rear portion of the combustion air supply pipe 24 of pressurization fluidized furnace 20 via pipe arrangement 91.
Be formed with burnt gas is discharged to the outlet 92A outside equipment in the bottom of the opposite side of air preheater 40, near the position upside of outlet 92A is formed with combustion air is supplied to the supply port 95B in equipment.As air preheater, preferably shell-and-tube exchanger.
(dust arrester)
Dust arrester 50 is arranged on the rear class of air preheater 40, removes the equipment of the impurity such as dust, the fluidisation sand of grain refined comprising in the burnt gas of sending from air preheater 40.
As the filter that is built in dust arrester 50, can use for example ceramic filter or bag filter, dust arrester 50 is formed with burnt gas is supplied to the supply port 92B in equipment in the lower sidewall of a side, is formed with the clean burnt gas of removing after impurity etc. is discharged to the outlet 93A outside equipment on top.And the supply port 92B of burnt gas is connected with the outlet 92A of the burnt gas of air preheater 40 via pipe arrangement 92.
In dust arrester 50, be built-in with filter (diagram is omitted) at the position that is formed at the supply port 92B of bottom and be formed between the above-below direction of outlet 93A on top.Impurity in the burnt gas of being removed by filter etc. is stored in the bottom in dust arrester 50 for the time being, is discharged to termly outside afterwards.
(booster)
Booster 60 is arranged on the rear class of dust arrester 50, formed by turbine 61, axle 63 and compressor 62, turbine 61 utilizes the burnt gas of discharging from dust arrester 50 and rotates, axle 63 transmits the rotation of turbine 61, compressor 62 is fixing coaxially with this turbine, is transmitted and rotates and generation compressed air by axle 63.The compressed air generating is fed into pressurization fluidized furnace 20 as combustion air.
Be formed with the clean burnt gas of being removed by dust arrester 50 after impurity is supplied to the supply port 93B in equipment in the lower sidewall of turbine 61 sides of booster 60 (with the orthogonal position of axle 63), be formed with burnt gas is discharged to the outlet 97A outside equipment in the sidewall downstream (position parallel with axle 63) of turbine 61 sides.And the supply port 93B of clean burnt gas is connected with the outlet 93A of dust arrester 50 via pipe arrangement 93.
Be formed with air intake to the supply port 67B in equipment at the sidewall upstream side (position parallel with axle 63) of compressor 62 sides of booster 60, be formed with at the sidewall upside of turbine 61 sides (with the orthogonal position of axle 63) compressed air that the air that makes to suck is boosted to 0.05～0.3MPa and be discharged to the outlet 94A outside equipment.And the supply port 67B of air is via pipe arrangement 16,67 air amounts.And, also with supply with the rising of combustion air in when starting to pressurization fluidized furnace 20 via pipe arrangement 66,67 and employ air blast 65 and be connected.On the other hand, compressed-air actuated outlet 94A is connected with the supply port 95B of air preheater 40 via pipe arrangement 94,95, and the rear portion of employing burner 22 with rising of pressurization fluidized furnace 20 via pipe arrangement 94,96 is connected.And the pipe arrangement 94 or 95 being connected with compressed-air actuated outlet has the 1st pressure sensor 111 of the pressure of measuring the compressed air (combustion air) of discharging from compressor 62.Here the pressure determining is output to control device 100, for open and close controlling of baffle plate 68C etc.
(rise and employ air blast)
Rising and employing air blast 65 is the equipment of employing burner 22 and combustion air supply pipe 24 that rises that combustion air is supplied to pressurization fluidized furnace 20 in the time that pressurized stream gasification furnace system 1 starts.And, rise and employ air blast 65 and there is following function simultaneously: owing to interrupting supplying with object being treated etc. from storage facility 10, the steam producing at pressurization fluidized furnace 20 is reduced, the rotating speed of the turbine 61 of booster 60 reduces, in the situation that the extraneous air being sucked by compressor 62 reduces, forcibly extraneous air is supplied to compressor 62 via pipe arrangement 66,67.
Rise and employ air blast 65 and be connected with the rear portion of employing burner 22 that is disposed at pressurization fluidized furnace 20 via pipe arrangement 66,68,96, be connected with the supply port 95B of the combustion air of air preheater 40 via pipe arrangement 66,68,95, be connected with the supply port 67B of the compressor 62 of booster 60 via pipe arrangement 66,67.In addition, pipe arrangement 66 has the 2nd pressure sensor 112 of having measured the ejection pressure of employing air blast 65.Here the pressure determining is output to control device 100, for open and close controlling of baffle plate 68C etc.
The pars intermedia of pipe arrangement 68 dispose as the pipe arrangement 68 of bypass flow path, carry out from employ pressure fan 65 and observe away from the baffle plate 68C being communicated with at the position of the tie point of pipe arrangement 67 and prevent the non-return valve 68D of pipe arrangement 68 and the back flow of gas of the connecting portion side of pipe arrangement 94.Till the baffle plate 68C intensification that while lighting a fire (rise employ burner 22) plays pressurization fluidized furnace 20 from pressurization fluidized furnace 20 while starting completes, pipe arrangement 68 is communicated with, after the intensification of the fluidized furnace 20 that pressurizes completes, pipe arrangement 68 is cut off., till the intensification of playing incinerator while starting from pressurization fluidized furnace 20 completes, from employ air blast 65 via pressurization fluidized furnace 20 employ burner 22, air preheater 40 is supplied with combustion air to the combustion air supply pipe 24 of pressurization fluidized furnace 20, and, also supply with combustion air via the pipe arrangement 67 as air flow circuit of not closing to compressor 62 sides of booster 60, after the intensification of incinerator completes, by the locking of baffle plate 68C, supply with combustion air via air preheater 40 to the combustion air supply pipe 24 of pressurization fluidized furnace 20 from the compressor 62 of booster 60.
(white cigarette prevents with preheater)
White cigarette prevent with preheater 70 are the white cigarettes in order to prevent from being discharged to from chimney 87 outside burnt gas, the burnt gas of discharging from booster 60 and the white cigarette that prevents blower fan supply from white cigarette are prevented with the air equipment of heat exchange indirectly.By heat exchange, make combusted off-gas cools and make white cigarette prevent from using atmosphere temperature rising.Prevent from carrying out heat exchange and cooling burnt gas is sent the smoke evacuation treating column 80 of rear class with preheater 70 by white cigarette.Prevent from, with preheater 70, can using shell and tube heat exchanger or heat-exchangers of the plate type etc. as white cigarette.
(smoke evacuation treating column)
Smoke evacuation treating column 80 is to prevent that the impurity that comprises in burnt gas etc. is discharged to the equipment outside equipment, disposes chimney 87 on the top of smoke evacuation treating column 80.
As Figure 1 and Figure 4, smoke evacuation treating column 80 is formed with and will prevents that from white cigarette the burnt gas with preheater is discharged is supplied to the supply port 98B in equipment in the lower sidewall of a side, in the lower sidewall of a side of chimney 87, be formed with and will carry out heat exchange with waste gas and heat up and the white cigarette of discharging prevents from preventing from being supplied to the supply port 99B in chimney 87 with preheater 70 from white cigarette with air.And, the supply port 98B of burnt gas prevents from being connected with the outlet 98A of the burnt gas of preheater 70 bottoms with being formed on white cigarette via pipe arrangement 98, white cigarette prevent with the supply port 99B of air via pipe arrangement 99 be formed on white cigarette and prevent from preventing from being connected with the outlet 99A of air with the white cigarette on preheater 70 tops.White cigarette prevents from preventing from preventing that by white cigarette being fed into white cigarette by air blower 101 via pipe arrangement 103 prevents from, with preheater 70, indirectly carrying out heat exchange with burnt gas, heats up and discharges from outlet 99A with air with the white cigarette of preheater 70.In chimney 87, by by intensification and dry white cigarette prevents from air, with moistening and condense in air and the burnt gas that is easily vaporific outlet mixes at supply port 99B, the relative humidity of burnt gas being declined, realize thus white cigarette and prevent.
Dispose the water of supplying with from outside is ejected into the injection spray pipe 84 in equipment with Sprayable in the side wall upper part of opposite side of smoke evacuation treating column 80, dispose respectively via circulating pump 83 the NaOH water that contains NaOH that is stored in treating column 80 bottoms of discharging fume is ejected into the injection spray pipe 85 in equipment with Sprayable in pars intermedia and bottom.And, be stored in the NaOH water in smoke evacuation treating column 80 via the never illustrated NaOH case supply of not shown hydroxide sodium pump, maintain all the time appropriate amount.
The burnt gas that is fed into smoke evacuation treating column 80 prevents from mixing with air removing the rear and white cigarette such as impurity, is discharged to outside from chimney 87.
(auxiliary-supplying apparatus of combustion air)
The auxiliary-supplying apparatus of combustion air is made up of following part: switch 11C, and its operation is as the driving condition of the quantitative feeding device 11 of the feedway of object being treated; Switch 65C, it has operated the driving condition of employing air blast 65; Baffle plate 68C, it carries out the connection as the pipe arrangement 68 of bypass flow path; Carbonomonoxide concentration meter (the first densimeter) 98C, oxymeter (the second densimeter) 98D, they are determined in air preheater 40 grades that heat is recovered and the carbon monoxide comprising in burnt gas that temperature declines, the capacity of oxygen; And control device 100, itself and input state are controlled output state accordingly.
In the present embodiment, the switch 11C of driving condition of operation quantitative feeding device 11 is installed in the quantitative feeding device 11 of storage facility 10, employs air blast 65 the switch 65C that has operated the driving condition of employing air blast 65 is installed rising.And, in order to measure the carbon monoxide, the oxygen amount that comprise in burnt gas, connect white cigarette and prevent from, with preheater 70 and smoke evacuation treating column 80, disposing carbonomonoxide concentration meter 98C and oxymeter 98D at the pipe arrangement 98 of the burnt gas that flows through lower temperature.And baffle plate 68C has electric actuator, open and close according to the output signal of control device 100.
As shown in Figure 5, switch 11C, carbonomonoxide concentration meter 98C and oxymeter 98D are connected with the input side of control device 100 via holding wire, and switch 65C is connected with the outlet side of control device 100 via holding wire with baffle plate 68C.
(method of operation)
Below, to using the method for operation of the auxiliary-supplying apparatus of combustion air to describe in the case of the supply of object being treated stops.
While opening at switch 11C, input signal (driving of quantitative feeding device 11 stops) to control device 100, as shown in Figure 6, in order to reduce from remaining in the harmful substances such as carbon monoxide that the unburnt object being treated of pressurization in fluidized furnace 20 produce, from control device 100 output, employ the CRANK PULSES of air blast 65 and connecting valve 65C, employ air blast 65 thereby driven, supply with combustion air via compressor 62, air preheater 40 etc. to the combustion air supply pipe 24 of pressurization fluidized furnace 20.As mentioned above, the driving that works the starting conditions of employing air blast 65 and be made as quantitative feeding device 11 is stopped, but for example in the case of more than the measured value of carbonomonoxide concentration meter 98C is the setting value of regulation, also can append 50% situation etc. that the combustion air of discharging from compressor 62 is less than rated capacity as the starting conditions appending.In addition, in the present embodiment, after stopping, the driving of quantitative feeding device 11 exports the CRANK PULSES of employing air blast 65, but, for example also can timer etc. be set at control device 100, from the driving of quantitative feeding device 11 stops after certain hour, employ air blast 65 and export CRANK PULSES to rising.
Measured value at carbonomonoxide concentration meter 98C does not change, the measured value of oxymeter 98D from 18vol% reach above with atmosphere the situation of 21vol% of oxygen concentration equivalence under, from control device 100 outputs, employ the stop signal of air blast 65, open switch 65C, thereby stop with the driving of air blast 65.And the installation site of carbonomonoxide concentration meter 98C and oxymeter 98D is not limited to pipe arrangement 98, by implementing hot countermeasure, also can be disposed at pipe arrangement 90,92,93,97.
(another method of operation)
Next, the method for operation making in situation that pressurized stream gasification furnace system 1 declines is below shown.
As shown in Figure 7, stop the quantitative feeding device 11 of storage facility 10 and the driving of delivery pump 12 as feedway, stop from storage facility 10 to the interior supply object being treated of pressurization fluidized furnace 20.By stopping the supply of object being treated, make to reduce from the burnt gas of pressurization fluidized furnace 20 interior discharges, the rotation of the turbine 61 of booster 60 becomes low speed gradually, and flow, the pressure of the combustion air of discharging from compressor 62 all reduce gradually.On the other hand, work the stopping of feedway of employing air blast 65 and accept object being treated, starting again.From employ combustion air that air blast 65 supplies with and be supplied to via compressor 62, air preheater 40 etc. the combustion air supply pipe 24 of pressurization fluidized furnace 20.
Next, in the case of at least 1 condition in meeting the following conditions, open as the pipe arrangement 68 of bypass flow path, from employ the combustion air that air blast 65 supplies with and be fed into combustion air supply pipe 24 via pipe arrangement 68.The 1st condition is 50% the situation that the combustion air of discharging from compressor 62 is less than rated capacity.The 2nd condition is the situation that the unburned gas concentration of the carbon monoxide, the dioxin etc. that comprise in burnt gas exceedes predefined value.Unburned gas concentration can be measured by the determinator being suitably arranged on burnt gas pipeline.The 3rd condition be from employ the high situation of pressure of the combustion air that the pressure ratio of the combustion air that air blast 65 sprays discharges from compressor 62.In addition, as long as measured by the 2nd pressure sensor 112 the ejection pressure of employing air blast 65, measured the pressure of the combustion air of discharging from compressor 62 by the 1st pressure sensor 111, will output to control device 100 from the value of these sensor outputs.In the case of meeting at least one in these conditions, from employ combustion air that air blast 65 supplies with and be fed into via pipe arrangement 66,68,95, air preheater 40, pipe arrangement 91 combustion air supply pipe 24 rear portion.In addition, be disposed at the separator valve 66C of pipe arrangement 66 with export from control device 100 make employ the CRANK PULSES interlock that air blast 65 turns round and open, pipe arrangement 66 is communicated with, the baffle plate 68C that is disposed at pipe arrangement 68 opens and closes according to the output signal of control device 100, in the case of meeting at least one in above-mentioned 3 conditions, the pipe arrangement 68 of opening is communicated with.Thus, can make to remain in the object being treated completing combustion in pressurization fluidized furnace 20.
Next, make to remain in the object being treated completing combustion in pressurization fluidized furnace 20, measured value decline compared with predefined value of carbonomonoxide concentration meter 98C, oxymeter 98D reach with atmosphere in oxygen concentration equivalence more than 21% after, the driving stopping with air blast 65.In addition, be disposed at the separator valve 66C of pipe arrangement 66 with export from control device 100 make employ the stop signal interlock that air blast 65 stops and sealing, pipe arrangement 66 obturations, the baffle plate 68C that is disposed at pipe arrangement 68 seals according to the stop signal of carrying out rising of self-control device 100 and employ air blast 65, pipe arrangement 68 obturations.
Next, the method for operation in the situation of the on-stream supply that stops object being treated of pressurized stream gasification furnace system 1 is described.
Such method of shutting down as shown in Figure 8: after stopping by the driving of the quantitative feeding device 11 at storage facility 10, made to employ air blast 65 and started, can make to remain in the object being treated completing combustion in pressurization fluidized furnace 20, prevent the harmful substances such as the carbon monoxide that produces due to the imperfect combustion of object being treated.
After the driving of quantitative feeding device 11 stops, having made to employ air blast 65 and started, from employ air blast 65 and supply with combustion air to compressor 62.Quantitative feeding device 11 is cut off electric power by opening switch 11C, stops driving, and the signal of opening switch 11C is input to control device 100.From employ the combustion air that air blast 65 discharges and be fed into compressor 62 via pipe arrangement 66,67, after the compressor 62 being rotated boosts, be fed into the rear portion of combustion air supply pipe 24 via pipe arrangement 94,96,95, air preheater 40, pipe arrangement 91.In addition, be disposed at the separator valve 66C of pipe arrangement 66 with export from control device 100 make employ the CRANK PULSES interlock that air blast 65 turns round and open, pipe arrangement 66 is communicated with.
After the driving of quantitative feeding device 11 stops, having made to employ air blast 65 starts, from employ air blast 65 and supply with combustion air to compressor 62, even thereby for example in the case of the combustion air of supplying with to combustion air supply pipe 24 from compressor 62 reduces, also can use from employ the combustion air that air blast 65 supplies with and make to remain in the object being treated completing combustion in booster 60, prevent the harmful substances such as the carbon monoxide producing due to the imperfect combustion of object being treated.
Next, stop the driving of the delivery pump 12 of storage facility 10, stop from delivering pump 12 to the interior supply object being treated of pressurization fluidized furnace 20.By stopping the supply of object being treated, make to reduce from the burnt gas of pressurization fluidized furnace 20 interior discharges, the rotation of the turbine 61 of booster 60 becomes low speed gradually, and the combustion air of discharging from compressor 62 reduces gradually.
Next, in the case of at least 1 condition in meeting the following conditions, open the pipe arrangement 68 as bypass flow path, from employ the combustion air that air blast 65 supplies with and be fed into combustion air supply pipe 24 via pipe arrangement 68.The 1st condition is 50% the situation that the combustion air of discharging from compressor 62 is less than rated capacity.The 2nd condition is the situation that the unburned gas concentration of the carbon monoxide, the dioxin etc. that comprise in burnt gas exceedes predefined value.Unburned gas concentration can be measured by the determinator being suitably arranged on burnt gas pipeline.The 3rd condition has been to employ the high situation of pressure of the combustion air that the ejection pressure ratio of air blast 65 discharges from compressor 62.In the case of meeting at least one in these conditions, from employ combustion air that air blast 65 supplies with and be fed into via pipe arrangement 66,68,95, air preheater 40, pipe arrangement 91 combustion air supply pipe 24 rear portion.In addition, be disposed at the separator valve 66C of pipe arrangement 66 with export from control device 100 make employ the CRANK PULSES interlock that air blast 65 turns round and open, pipe arrangement 66 is communicated with, the baffle plate 68C that is disposed at pipe arrangement 68 opens and closes according to the output signal of control device 100, in the case of meeting at least one in above-mentioned 3 conditions, pipe arrangement 68 is communicated with.Thus, can make to remain in the object being treated completing combustion in pressurization fluidized furnace 20.
Next,, after making to remain in the object being treated completing combustion in pressurization fluidized furnace 20, stop with the driving of air blast 65.In addition, be disposed at the separator valve 66C of pipe arrangement 66 with export from control device 100 make employ the stop signal interlock that air blast 65 stops and sealing, pipe arrangement 66 obturations, the baffle plate 68C that is disposed at pipe arrangement 68 seals according to the stop signal of carrying out rising of self-control device 100 and employ air blast 65, pipe arrangement 68 obturations.
Label declaration
1: pressurized stream gasification furnace system; 10: storage facility; 11: quantitative feeding device; 12: deliver pump; 20: pressurization fluidized furnace; 21: auxiliary fuel burner; 22: rise and employ burner; 24: combustion air supply pipe; 60: booster; 61: turbine; 62: compressor; 65: rise and employ air blast; 70: white cigarette prevents with preheater; 80: smoke evacuation treating column; 87: chimney; 98C: carbonomonoxide concentration meter (the first densimeter); 98D: oxymeter (the second densimeter); 100: control device.
Claims (5)
1. a method of operation for pressurized stream gasification furnace system, this pressurized stream gasification furnace system has: the feedway of object being treated, it supplies with object being treated to the pressurization fluidized furnace that makes object being treated burning; Booster, its be built-in with the turbine that utilizes the burnt gas that goes out from this pressurization fluidisation fire grate and rotate and follow the rotation of turbine and rotate supply with the compressor of combustion air to described pressurization fluidized furnace; Rise and employ air blast, its in the time of starting via bypass flow path to described pressurization fluidized furnace air supply and stop after booster air supply via air flow circuit; And measure the first densimeter of the unburned gas concentration the burnt gas that goes out from described pressurization fluidisation fire grate and measure the second densimeter of oxygen concentration, it is characterized in that,
In described method of operation, stop again starting as condition has made to employ air blast taking the feedway of described object being treated, from described, employ the compressor air supply of air blast to described booster.
2. the method for operation of pressurized stream gasification furnace system according to claim 1, wherein, in the case of meet the combustion air of supplying with to pressurization fluidized furnace from described compressor be less than rated capacity 50%, described unburned gas concentration is more than the setting value of regulation and from described, employs at least one party the situation that the pressure of the combustion air that compressed-air actuated pressure ratio that air blast discharges discharges from described compressor is high, open described bypass flow path, from described, employ air blast to described pressurization fluidized furnace air supply via described bypass flow path.
3. the method for operation of pressurized stream gasification furnace system according to claim 1 and 2, wherein, after the setting value of fixed value or regulation declines, stops the described driving of employing air blast that rises in the measured value of described the first densimeter.
4. the method for operation of pressurized stream gasification furnace system according to claim 3, wherein, the measured value of described the second densimeter become with the roughly the same value of airborne oxygen concentration after, stop the described driving of employing air blast that rises.
5. according to the method for operation of the pressurized stream gasification furnace system described in claim 1 or 3, wherein, described the first densimeter is carbonomonoxide concentration meter or dioxin densimeter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-069488 | 2012-03-26 | ||
| JP2012069488A JP5956211B2 (en) | 2012-03-26 | 2012-03-26 | Operating method of pressurized fluidized furnace system |
| PCT/JP2013/058329 WO2013146598A1 (en) | 2012-03-26 | 2013-03-22 | Operating method for pressurized fluidized furnace system |
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| CN104204667A true CN104204667A (en) | 2014-12-10 |
| CN104204667B CN104204667B (en) | 2017-03-15 |
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| CN201380013571.2A Active CN104204667B (en) | 2012-03-26 | 2013-03-22 | The method of operation of pressurization fluidisation furnace system |
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| JP (1) | JP5956211B2 (en) |
| KR (1) | KR102086185B1 (en) |
| CN (1) | CN104204667B (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976624A (en) * | 2015-07-06 | 2015-10-14 | 福建朗乾坤环保科技有限公司 | Method for dioxin control of garbage incinerator |
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| US10985608B2 (en) | 2016-12-13 | 2021-04-20 | General Electric Company | Back-up power system for a component and method of assembling same |
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| JP2013200087A (en) | 2013-10-03 |
| KR102086185B1 (en) | 2020-03-06 |
| CN104204667B (en) | 2017-03-15 |
| WO2013146598A1 (en) | 2013-10-03 |
| JP5956211B2 (en) | 2016-07-27 |
| KR20150045923A (en) | 2015-04-29 |
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